18653780

素因数分解:

$2^2\times 5^1\times {\mathrm{311}}^1\times {\mathrm{2999}}^1$

素因数の和:3319

約数の個数: 24

約数和(自身を含む): 39312000

約数和(自身を除く): 20658220

約数列:

[1, 2, 4, 5, 10, 20, 311, 622, 1244, 1555, 2999, 3110, 5998, 6220, 11996, 14995, 29990, 59980, 932689, 1865378, 3730756, 4663445, 9326890, 18653780]

約数ペア:

[(1, 18653780), (2, 9326890), (4, 4663445), (5, 3730756), (10, 1865378), (20, 932689), (311, 59980), (622, 29990), (1244, 14995), (1555, 11996), (2999, 6220), (3110, 5998)]